Weather Records on 21 June 1966

467 weather records were set or tied worldwide on 21 June 1966. Highest significance: Windom, US.

Key Facts for 21 June 1966

On 21 June 1966, 467 weather records were set or tied at long-record stations worldwide.
102 were record highs and 171 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 24 monthly and 442 daily.
Windom set a daily record precipitation of 68.6 mm (2.7 in) on 21 June 1966.
Across 165 earlier years (1802 to 2026) the same calendar date averaged 431 records.

Record Map

467 stations

467 station records on 21 June 1966 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 June 1966: highest significance records shown on the map
Station	Country	Type	Value	Significance
Windom	United States	Record daily precipitation	68.6 mm (2.7 in)	63 of 100 (Major)
Kumminin	Australia	Record daily precipitation	41.4 mm (1.6 in)	59 of 100 (Notable)
Hyden	Australia	Record daily precipitation	52.6 mm (2.1 in)	58 of 100 (Notable)
Sheoganj	India	Record daily precipitation	84.3 mm (3.3 in)	58 of 100 (Notable)
Graball	Australia	Record daily precipitation	55.9 mm (2.2 in)	57 of 100 (Notable)
Kondinin	Australia	Record daily precipitation	40.9 mm (1.6 in)	57 of 100 (Notable)
Friars Well	Australia	Record daily precipitation	51.8 mm (2.0 in)	55 of 100 (Notable)
Dasuya	India	Record daily precipitation	112.0 mm (4.4 in)	54 of 100 (Notable)
Wychitella	Australia	Record daily precipitation	37.1 mm (1.5 in)	53 of 100 (Notable)
Kotkhai	India	Record daily precipitation	100.0 mm (3.9 in)	53 of 100 (Notable)
Lanaubra	Australia	Record daily precipitation	28.2 mm (1.1 in)	52 of 100 (Notable)
Cuetzalan del Progreso	Mexico	Record daily precipitation	239.8 mm (9.4 in)	49 of 100 (Notable)
Merredin	Australia	Record daily precipitation	36.6 mm (1.4 in)	48 of 100 (Notable)
Wanghroli Tank	India	Record daily precipitation	87.6 mm (3.4 in)	48 of 100 (Notable)
Bruce Rock	Australia	Record daily precipitation	37.3 mm (1.5 in)	46 of 100 (Notable)
Noonegin	Australia	Record daily precipitation	38.6 mm (1.5 in)	45 of 100 (Notable)
Kitlane	Australia	Record daily precipitation	43.7 mm (1.7 in)	45 of 100 (Notable)
Batala	India	Record daily precipitation	44.5 mm (1.8 in)	45 of 100 (Notable)
Merredin Research Station	Australia	Record daily precipitation	31.8 mm (1.3 in)	44 of 100 (Notable)
Nangeenan	Australia	Record daily precipitation	33.0 mm (1.3 in)	44 of 100 (Notable)
The Granites	Australia	Record daily precipitation	38.1 mm (1.5 in)	43 of 100 (Notable)
Booralee	Australia	Record daily precipitation	33.3 mm (1.3 in)	43 of 100 (Notable)
Baandee North	Australia	Record daily precipitation	30.5 mm (1.2 in)	42 of 100 (Notable)
Nokaning	Australia	Record daily precipitation	33.3 mm (1.3 in)	42 of 100 (Notable)
Balasinor	India	Record daily precipitation	106.0 mm (4.2 in)	42 of 100 (Notable)
Onaka	United States	Record daily precipitation	129.5 mm (5.1 in)	42 of 100 (Notable)
Wadderin	Australia	Record daily precipitation	47.5 mm (1.9 in)	41 of 100 (Notable)
Ardath	Australia	Record daily precipitation	39.6 mm (1.6 in)	40 of 100 (Notable)
Lake Biddy	Australia	Record daily precipitation	33.5 mm (1.3 in)	40 of 100 (Notable)
Paravur	India	Record daily precipitation	169.2 mm (6.7 in)	40 of 100 (Notable)
Fort Hill	Australia	Record daily precipitation	41.7 mm (1.6 in)	39 of 100 (Notable)
Graham Rock	Australia	Record daily precipitation	43.2 mm (1.7 in)	39 of 100 (Notable)
Nimbahera	India	Record daily precipitation	100.6 mm (4.0 in)	39 of 100 (Notable)
Bali	India	Record daily precipitation	67.8 mm (2.7 in)	39 of 100 (Notable)
Brookings 2 NE	United States	Record daily precipitation	38.6 mm (1.5 in)	39 of 100 (Notable)
Kununoppin	Australia	Record daily precipitation	27.4 mm (1.1 in)	36 of 100 (Notable)
Hartwood	Australia	Record daily precipitation	35.8 mm (1.4 in)	34 of 100 (Routine)
Pingaring	Australia	Record daily precipitation	46.0 mm (1.8 in)	34 of 100 (Routine)
Thasra	India	Record daily precipitation	78.0 mm (3.1 in)	34 of 100 (Routine)
Burracoppin	Australia	Record daily precipitation	43.4 mm (1.7 in)	33 of 100 (Routine)
Breakell	Australia	Record daily precipitation	33.8 mm (1.3 in)	33 of 100 (Routine)
Shackleton Post Office	Australia	Record daily precipitation	34.5 mm (1.4 in)	33 of 100 (Routine)
Narembeen	Australia	Record daily precipitation	45.7 mm (1.8 in)	33 of 100 (Routine)
Americus	United States	Record low minimum temperature	15.0 C (59.0 F)	33 of 100 (Routine)
Washington 2 ESE	United States	Record low minimum temperature	12.2 C (54.0 F)	33 of 100 (Routine)
Kingstree	United States	Record low minimum temperature	12.2 C (54.0 F)	33 of 100 (Routine)
Beaumont City	United States	Record low minimum temperature	16.1 C (61.0 F)	33 of 100 (Routine)
Hatteras	United States	Record low minimum temperature	17.2 C (63.0 F)	33 of 100 (Routine)
Trayning	Australia	Record daily precipitation	31.0 mm (1.2 in)	31 of 100 (Routine)
Hanumangarh	India	Record daily precipitation	29.1 mm (1.1 in)	31 of 100 (Routine)
Verhnjaja Tom	Russia	Record daily precipitation	54.7 mm (2.2 in)	31 of 100 (Routine)
Hawkinsville	United States	Record low minimum temperature	13.3 C (55.9 F)	31 of 100 (Routine)
Koonadgin	Australia	Record daily precipitation	44.7 mm (1.8 in)	30 of 100 (Routine)
Pelee Island	Canada	Record high minimum temperature	23.9 C (75.0 F)	30 of 100 (Routine)
Kojaneerup	Australia	Record daily precipitation	50.8 mm (2.0 in)	29 of 100 (Routine)
Santa Rosalia (Dge)	Mexico	Record high maximum temperature	44.4 C (111.9 F)	29 of 100 (Routine)
Ft Wingate	United States	Record high minimum temperature	17.8 C (64.0 F)	29 of 100 (Routine)
Wrangell AP	United States	Record low minimum temperature	1.1 C (34.0 F)	29 of 100 (Routine)
Barkerville	Canada	Record daily snowfall	6.9 cm (2.7 in)	28 of 100 (Routine)
Davidson	Canada	Record daily precipitation	40.4 mm (1.6 in)	28 of 100 (Routine)

Counts by Type and Timescale

467 records

Records set or tied on 21 June 1966 by type: Highest daily maximum 18, Lowest daily maximum 38, Highest daily minimum 84, Lowest daily minimum 133, Heaviest daily rainfall 193, Heaviest daily snowfall 1.

Records on 21 June 1966 by type
Record type	Records
Highest daily maximum	18
Lowest daily maximum	38
Highest daily minimum	84
Lowest daily minimum	133
Heaviest daily rainfall	193
Heaviest daily snowfall	1
Deepest snow cover	0

Records on 21 June 1966 by timescale: all-time 1, monthly 24, daily 442.

How Much Records Were Beaten By

376 broken records

Margins by which the 376 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 85.4. Ties are not counted.

Top 20 by Significance

21 June 1966

Top 20 records on 21 June 1966 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 June 1966	Windom, US	daily rain	68.6 mm (2.7 in)	54.4 mm (2.1 in)	56 years	63 of 100 (Major)
21 June 1966	Kumminin, AU	daily rain	41.4 mm (1.6 in)	23.9 mm (0.9 in)	48 years	59 of 100 (Notable)
21 June 1966	Hyden, AU	monthly rain	52.6 mm (2.1 in)	19.6 mm (0.8 in)	28 years	58 of 100 (Notable)
21 June 1966	Sheoganj, IN	daily rain	84.3 mm (3.3 in)	76.7 mm (3.0 in)	45 years	58 of 100 (Notable)
21 June 1966	Graball, AU	monthly rain	55.9 mm (2.2 in)	16.3 mm (0.6 in)	48 years	57 of 100 (Notable)
21 June 1966	Kondinin, AU	daily rain	40.9 mm (1.6 in)	27.4 mm (1.1 in)	43 years	57 of 100 (Notable)
21 June 1966	Friars Well, AU	monthly rain	51.8 mm (2.0 in)	23.9 mm (0.9 in)	1 year	55 of 100 (Notable)
21 June 1966	Dasuya, IN	daily rain	112.0 mm (4.4 in)	65.5 mm (2.6 in)	29 years	54 of 100 (Notable)
21 June 1966	Wychitella, AU	daily rain	37.1 mm (1.5 in)	18.8 mm (0.7 in)	48 years	53 of 100 (Notable)
21 June 1966	Kotkhai, IN	daily rain	100.0 mm (3.9 in)	49.2 mm (1.9 in)	27 years	53 of 100 (Notable)
21 June 1966	Lanaubra, AU	daily rain	28.2 mm (1.1 in)	17.8 mm (0.7 in)	48 years	52 of 100 (Notable)
21 June 1966	Cuetzalan del Progreso, MX	monthly rain	239.8 mm (9.4 in)	85.4 mm (3.4 in)	27 years	49 of 100 (Notable)
21 June 1966	Merredin, AU	daily rain	36.6 mm (1.4 in)	21.6 mm (0.9 in)	19 years	48 of 100 (Notable)
21 June 1966	Wanghroli Tank, IN	daily rain	87.6 mm (3.4 in)	77.4 mm (3.0 in)	24 years	48 of 100 (Notable)
21 June 1966	Bruce Rock, AU	daily rain	37.3 mm (1.5 in)	15.2 mm (0.6 in)	48 years	46 of 100 (Notable)
21 June 1966	Noonegin, AU	daily rain	38.6 mm (1.5 in)	15.2 mm (0.6 in)	48 years	45 of 100 (Notable)
21 June 1966	Kitlane, AU	monthly rain	43.7 mm (1.7 in)	10.7 mm (0.4 in)	42 years	45 of 100 (Notable)
21 June 1966	Batala, IN	daily rain	44.5 mm (1.8 in)	30.8 mm (1.2 in)	52 years	45 of 100 (Notable)
21 June 1966	Merredin Research Station, AU	daily rain	31.8 mm (1.3 in)	18.6 mm (0.7 in)	19 years	44 of 100 (Notable)
21 June 1966	Nangeenan, AU	daily rain	33.0 mm (1.3 in)	15.5 mm (0.6 in)	40 years	44 of 100 (Notable)

Significance is a score from 0 to 100 combining margin, the age of the old record and the length of the station's record. How it is computed.

The Same Date in Other Years

1802 to 1966

Records set or tied on this calendar date in each year from 1802 to 1966. 1966 had 467 records.

Counts for years before the ledger starts come from the same station rules.

Records on 06-21 in each year
Year	Records
1802	1
1803	2
1805	1
1814	1
1821	3
1828	1
1831	1
1839	2
1846	1
1853	1
1855	1
1861	3
1865	1
1868	1
1869	4
1870	3
1871	1
1873	1
1874	1
1875	2
1879	1
1880	1
1881	1
1882	1
1883	1
1884	2
1885	1
1886	3
1887	1
1888	3
1889	1
1891	1
1892	2
1893	7
1895	6
1896	3
1897	3
1898	6
1899	6
1900	6
1901	5
1902	20
1903	15
1904	7
1905	14
1906	19
1907	15
1908	20
1909	19
1910	36
1911	12
1912	14
1913	34
1914	24
1915	40
1916	80
1917	97
1918	77
1919	32
1920	42
1921	85
1922	43
1923	229
1924	124
1925	333
1926	162
1927	146
1928	139
1929	84
1930	177
1931	340
1932	180
1933	645
1934	223
1935	247
1936	642
1937	475
1938	396
1939	250
1940	674
1941	401
1942	340
1943	439
1944	426
1945	709
1946	386
1947	637
1948	392
1949	391
1950	329
1951	347
1952	502
1953	761
1954	501
1955	271
1956	534
1957	932
1958	627
1959	356
1960	471
1961	956
1962	176
1963	667
1964	458
1965	400
1966	467
1967	789
1968	654
1969	687
1970	614
1971	394
1972	934
1973	683
1974	598
1975	996
1976	746
1977	476
1978	368
1979	857
1980	677
1981	889
1982	658
1983	752
1984	913
1985	516
1986	601
1987	940
1988	1,834
1989	856
1990	847
1991	1,067
1992	1,679
1993	939
1994	777
1995	978
1996	1,075
1997	1,037
1998	1,746
1999	994
2000	1,212
2001	658
2002	828
2003	1,034
2004	697
2005	1,090
2006	774
2007	1,085
2008	580
2009	1,060
2010	852
2011	1,340
2012	1,151
2013	571
2014	434
2015	707
2016	877
2017	954
2018	577
2019	969
2020	519
2021	1,132
2022	774
2023	987
2024	679
2025	1,536
2026	736

Download the Data

Data for records on 1966-06-21: CSV or JSON. Field meanings are on the data page.

Sources: Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Made with Natural Earth. Public domain map data. Borders are Natural Earth's de facto depiction. Data as of 2026-10-14 (14 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-12. Last revised 12 October 2026 (2026-10-12).

Margin	Records
0 to 20	349
20 to 40	16
40 to 60	5
60 to 80	5
80 to 100	1